McFadden out for Raiders with hamstring injury

Oakland Raiders running back Darren McFadden is inactive against the San Francisco 49ers with an injured right hamstring.

This is the second straight game McFadden has missed with the injury. Michael Bush will start is his place.

The Raiders are also without their starting quarterback. Bruce Gradkowski is slowed by a right shoulder injury and is listed as the third quarterback. Jason Campbell will get the start and Kyle Boller is the No. 2 quarterback.

Among the inactives for the 49ers are former Raiders offensive lineman Barry Sims and tight end Delanie Walker, who has an injured ankle.